John Gill Commentary 2 Kings 25:4

"Then a breach was made in the city, and all the men of war [fled] by night by the way of the gate between the two walls, which was by the king`s garden (now the Chaldeans were against the city round about); and [the king] went by the way of the Arabah." — 2 Kings 25:4 (ASV)

(See Gill on 2 Kings 25:1)